Thread: Replacing Gear Drive

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Since I found this forum, I found that gear drives are not the siutable route to run the cam. My question is the gear set up had a cam button, should a hydraulic flat lifter cam have a button when switching to a double chain? Thanks all.

What engine are you running? If it's a sbc, a button shouldn't be required.

Originally Posted by Dave Severson

What engine are you running? If it's a sbc, a button shouldn't be required.

Its a 454 30 over with an Edelbrock rpm cam.

gears are straight cut so there is a need for the button on a roller cam like a chain you would use one to on a roller cam. but with a flat lifter cam or soild cam the lifter help hold the cam in but the button will not hurt any thing if you want to use one with the chain set will help the chain from any side load it may see

you can make up a stop on the back of the water pump if short water pump i make up a feeler gauge out of 1/8 or 1/6 steel run a longer bolt on the water pump back plate then you can use a feeler gauge to check air gap from cover to the back water pump and then use a old feeler gauge for final shim or cut up a coke can and make up shims .for a long water pump you can tack a nut on the back side of the water pump and a small jam nut on a bolt turn bolt out till it just it hits the timming cover before you use the bolt file the top of the head of the bolt flat or weld a small bit of steel in the center of the timming and turn down the button till it fits back in the cover or if a roller button is used a small block button works better if you weld a steel backer in the inside of the cover . you can tune in the end play by adding one more gasket on the timing cover less you have a alum cover them you do not have to do any of this stuff

Thats a nice 2 piece cover that will not leak ,finally a good design!!!!
The older 2 piece ones that the whole front comes off of are known leakers ,that one looks like it will not leak at all!!!